122 results about "Round face" patented technology

The invention provides a pipeline dredging device, and belongs to the structural field of urban sewer line dredging equipment. The pipeline dredging device comprises a tail bearing hydraulic locating seat and a front bearing hydraulic locating seat, a front central protrusion of the tail bearing hydraulic locating seat is connected with a rear central protrusion of the front bearing hydraulic locating seat through a single-acting linear hydraulic cylinder, and the annular face of the front end of the front bearing hydraulic locating seat is connected with the annular face of the rear end of a sealed box in a fastening mode. A single-acting hydraulic cylinder is arranged on a central axis of the sealed box, a base of the single-acting hydraulic cylinder is connected with the sealed box in a fastening mode, the piston end of the single-acting hydraulic cylinder is connected with a base of a servo motor in a fastening mode, the servo motor is arranged in the sealed box, the output end of the servo motor is connected with the rear end of a coupling, and connecting rods are evenly distributed on the outer annular face of the front end of the coupling. The front end of the sealed box is covered with an end cover, an opening is formed in the center of the end cover, a bearing is arranged on the inner ring face of the end cover, the outer ring face of the rear end of a tool rest is born on the inner ring face of the bearing, and cleaning blades are evenly distributed on the outer round face of the front end of the tool rest.

The invention relates to a labyrinth drip irrigation tape forming wheel, consisting of a shaft, a left cooler pan, a right cooler pan, a forming pan, a water sealing ring and a vacuum pan; wherein, the end face of the forming pan is provided with a small hole which is communicated with an air drain of the left cooler pan, the middle of the outer round face of the forming pan is provided with a ring groove, labyrinth flow passages are symmetrically arranged at two sides of the ring groove, a corner of the labyrinth flow passage is provided with a micropore which is communicated with a small hole on the end face of the forming pan. The labyrinth drip irrigation tape forming wheel is characterized in that: the assembly accuracy of the forming wheel can be increased, the flow deviation of the produced drip irrigation tape can be reduced, the purpose that the drip irrigation tapes with different flow rates are produced by one set of wheels can be realized under the condition that only the forming pan is replaced; furthermore, the processing procedures of the forming pan are reduced, therefore, the cost is lowered.

The invention belongs to the technical field of wood processing equipment, and particularly discloses a chipless wood polishing device. The chipless wood polishing device comprises a workbench. A cylinder is rotationally arranged on the workbench. A collection box is arranged on the right side of the cylinder. An impeller is arranged in the collection box and connected with the cylinder through atransmission mechanism. A clamping mechanism for clamping wood is arranged on the workbench. Two supporting plates are arranged on the right side of the collection box. Sliding cavities are formed inthe middles of the two supporting plates correspondingly. Sliding blocks slide in the two sliding cavities correspondingly. A rough polishing roller and a fine polishing roller are rotationally connected between the two sliding blocks. Racks are fixedly connected with the supporting plates. Gears are fixedly connected with the ends of the rough polishing roller and the ends of the fine polishing roller correspondingly. A curved sliding groove is formed in the round face of the cylinder. An oscillating bar is hinged between the cylinder and the supporting plates. The cylinder rotates to drive the oscillating bar to reciprocally swing through the curved sliding groove. Two telescopic rods are fixedly connected with the right end of the oscillating bar. The right ends of the two telescopic rods are hinged to the two sliding blocks correspondingly. According to the scheme, the polishing efficiency is high, and collection treatment on chips is achieved.

The invention provides a sport ball washing machine. The sport ball washing machine comprises a bottom plate and is characterized in that an opening is formed in one side of the bottom plate, side face baffles are arranged on the two sides of the bottom plate, symmetrical one-way doors are arranged on the side face baffles, the bottom plate is connected with a washing cavity, a top washing device is arranged on the upper side of the washing cavity, symmetrical side face washing devices are arranged on the two sides of the washing cavity, and an outlet is formed in the outer side of the washing cavity and connected with a ball collection basket. The top washing motor drives the top brush wheels through a transmission belt so that the tops of balls can be brushed and washed; meanwhile, by means of brushes, balls are in the rotating state in the brushing and washing process, and it is ensured that round faces of balls can be fully brushed and washed. By means of the sport ball washing machine, automatic ball entering and washing can be achieved, and the whole sport ball washing machine is simple in mechanism, high in automation degree, good in washing effect and high in efficiency.

The invention discloses an electrical terminal ground structure and an installation method. The electrical terminal ground structure is characterized in that a bolt is provided with a wedge-shaped head and a threaded section, a shrink-ring is provided with a wedge-shaped face sleeve and a flange, and the wedge-shaped head is sleeved with the sleeve; the external round face of the sleeve is in tight fit with an installation hole of a ground plate in the radial direction; a lock nut and a spacer are installed outside the threaded section; an electrical terminal is axially installed between the flange and the spacer, and an axially screwed nut enables the electrical terminal to make tight contact with the flange of the shrink-ring. The bolt is made of stainless steel, and the shrink-ring is made of aluminum alloy or copper alloy. The installation method comprises the steps that after the surfaces of the bolt and the sleeve are processed, the wedge-shaped head is sleeved with the sleeve, the sleeve is inserted into the installation hole, the bolt is screwed in a riveting device for riveting, and then the bolt is sleeved with the electrical terminal and the nut until axial compression is achieved. The test shows that by the adoption of the structure and size optimization, the properties such as pulling-out force, rotational torque, leakage, a resistance value, impact resistance and vibration resistance can meet the requirements. The existing welding defects are overcome, the connection problem caused when an existing ground plate is made of a composite material is solved, and the electrical terminal ground structure is applied to high-speed trains, railway tracks, buildings and the like and meets the property requirement of ground structures under the complex conditions.

The invention discloses an explosion arrestment flap valve. The explosion arrestment flap valve comprises a valve body. The valve body comprises a valve shell and a valve deck. The bottom end of the valve deck is fixedly provided with support seats. The two ends of the valve deck are provided with a gas inlet and a gas outlet correspondingly. An explosion arrestment mechanism is arranged in the valve body and comprises a blocking pipeline. An explosion arrestment flap is arranged at a pipe opening, located in the valve body, of the blocking pipeline. An overturning mechanism is arranged on theupper side of the blocking pipeline. The pipeline opening, matched with the explosion arrestment flap, of the blocking pipeline is arranged to be of an inclined round face structure. The circumferential face, facing the explosion arrestment flap, of the pipeline opening of the blocking pipeline is provided with an annular seal rubber ring groove and an annular seal rubber ring embedded into the annular seal rubber ring groove. According to the explosion arrestment flap valve, in the manner that the explosion arrestment flap is arranged to be a concave plate, the middle portion of the explosion arrestment flap is not prone to deformation under the action of impact force, and the service life of the explosion arrestment flap is greatly prolonged.

The invention discloses a novel active air foil bearing. The bearing comprises a shaft sleeve, the PZTs, the flexible hinges, rigid push rods, precompression exertion devices, wave foil and top foil; the shaft sleeve is machined through wire cutting, three PZT mounting through grooves circumferentially and evenly distributed, the corresponding flexible hinges and the corresponding rigid push rods are obtained, the top ends of the rigid push rods are flush with the inner cylindrical face of the shaft sleeve, the PZTs are mounted in the through grooves, the corresponding precompression exertion devices are designed for the PZTs, the wave foil is formed by pressing of elastic materials, and is arranged on the shaft sleeve and the inner cylindrical faces of the rigid push rods, one end of the wave foil is welded to the inner round face of the shaft sleeve, and the other end of the wave foil is free. The top foil is arranged on the wave foil in a covering manner. Through control over power supply signals of the PZTs, the PZTs mechanically deform, the flexible hinges are enlarged to deform, and are supported through the rigid push rods to be attached to the wave foil on the push rods and the inner wall of the shaft sleeve, a gap between a bearing and a supporting rotor is changed, the wedge space is increased, the crossed coupling effect is weakened, the bearing dynamic pressure effect is enhanced, the rigid characteristic of the bearing is improved, and finally the aims of actively controlling the rigidity characteristics of the bearing and improving the stability of the bearing are achieved.

The invention discloses a cam compression clamp and aims to solve the problem that a horizontally arranged columnar workpiece cannot be well fixed in the prior art. According to the scheme disclosed by the invention, the cam compression clamp is characterized by comprising an engine bed and a clamping jaw, wherein the upper surface of the engine bed is a V-shaped supporting surface; the clamping jaw is connected with the engine bed in the manner of vertical shifting, and a left driven end and a right driven end which are used for compressing the top round face of the workpiece are arranged above the V-shaped supporting surface; the engine bed is hinged with the cam; and a driving end arranged on the clamping jaw is abutted with the lower edge of the cam. The technical scheme has the characteristic that the horizontally-arranged columnar workpiece can be well fixed through matching the engine bed with the clamping jaw.

An electric car axle comprises a car axle body, a brake, a motor, a hub and a wide-base and single-tire rim. Stand columns are arranged at the two ends of the car axle body, and a motor mounting station is arranged on the outer side of each stand column. The motor comprises a housing, a stator coil, a rotor coil and a motor spindle, wherein the housing is mounted on the motor mounting stations, the stator coil is fixed to the housing, the motor spindle is rotatably fixed to the housing, and the rotor coil is fixed to the motor spindle. The inner round face of the hub is connected with the outer side end of the motor spindle through a spline, and the outer round face of the hub is supported on the inner edge of the housing of the motor through two tapered roller bearings. The wide-base andsingle-tire rim is fixed with the hub. The motor spindle, the hub and the axis of the hub are in coincidence, and the axis of the motor spindle is parallel to the plane where the plate type structureof the car axle body is placed. The electric car axle can prolong the service life of the motor, improve the reliability of the motor and reduce the height of a car floor.

The invention relates to a machining process for a disc spring used for a forging press. The machining process is characterized in that round steel is blanked, upsetting operation and drawing-out forging operation are conducted at least four times, after the steel is annealed, the outer round face is turned, holes are drilled, the steel is turned and sliced, the two end faces of each piece are ground and deburred, and cold pressing forming is conducted on each piece on a cold pressing forming die; each piece is quenched, each piece is tempered in a die clamping state and air-cooled to the normal temperature after being tempered, and a product is checked and put in storage after the die is detached. According to the machining process, the process procedure is reasonable, the structural strength and the fatigue resistance of the disc spring are improved, the service life of the disc spring is prolonged, the halt repair time of the forging press is shortened, production efficiency is improved, the workload of workers is reduced, and the labor intensity of the workers is lowered.

This invention discloses a fridge with domestic bar door. It includes: opening part on the fridge door; domestic bar door frame on the inner round face of opening part; domestic bar door with hinge connecting at inferior end of domestic bar door frame. It is used to open and close the opening part; padlock component on the superior end of domestic bar door inner face; latch unit in the latch trough corresponding to the padlock component on the superior end of domestic bar door frame; a pair of dumping component on two lateral faces of domestic bar door. They protrude outwards and act as rotating shaft. The domestic bar door connects to domestic bar door frame through dumping component. Users can open and close the domestic bar door simply by pressing operation.

The invention relates to a vegetable planting machine, comprising a frame, the frame has a power mechanism, a walking mechanism, a seed releasing mechanism, a water supply mechanism and a ditching mechanism, the power mechanism includes a motor and a gearbox, the running mechanism includes a crawler chassis, and the front of the frame The first part is a gearbox for driving the crawler belt. The seed release mechanism includes a first hollow cylinder and a second hollow cylinder. The center of the second hollow cylinder has a first rotating shaft. The hollow cylinder includes a seed storage room and a compartment. There is a water supply mechanism at the rear of the second hollow cylinder. The water supply mechanism includes a water tank and a water pipe. One end of the water pipe is connected to the water tank and the other end is suspended in the air. There are ditch knives. The structure of this design is reasonable. By limiting the water flow mechanism, it can avoid excessive use of water. When using it, you only need to put the seeds into the hopper, and you can realize the work of ditching, planting, watering and closing the ditch by controlling the handrail. It is easy to use .

This LED light gathering device belongs to electric light source field. It comprises a base, a circuit board, a LED, a cone and a convex mirror, with the base fastened to the circuit board, glued to the cone and hooked with the latch of the convex mirror, and the circuit board and LED connected through light. The cone is a round face or multi face cone. The base takes on the shape of a barrel or the barrel with multi faces. The circuit is in the shape of a barrel or with the walls in multi faces. The multi face cone has 3-18 sides. And the inner wall of the barrel takes on the shape with 3-18 walls. So does that of the circuit board. The electric link of the circuit board and the LED is separated into 1-10 lines of electric linkage with 3-180 LEDs. The cone is made of high refraction material. It can be used for lighting or all kinds of electric apparatus. It is energy saving, high adjustable luminance, free from cooling or driving and any other material in making, large range of color development, quick ignition and extinguishing, with extensive use and long life.

The invention discloses a kind of steel-plastic tube of large caliber, which includes tube body. The tube body is composed of steel tube and the plastic layer wrapped onto the internal and external round face; the material of plastic layer is made by polyethylene of high density, Fiberglass, butyl or propyl cellulose acetate which are mixed by the proportion: polyethylene of high density: 25-60parts; Fiberglas 10-30parts; cellulose acetate 0.5-2.5parts. The advantages of the invention are as follows: increase by large scale causticity resisting, decrease by large cost and the weight. At the same time, it offers a broad way to reuse the deposing plastic, and it also makes the active social effect to depose the pollution of deposing plastic.

A saw tooth has a base body comprising a solderable hard metal and a hard layer comprising a material that is harder than the hard metal of the base body; the hard layer is provided on a front face of the base body, and the tooth face has at least one chamfered and/or rounded face portion.